[llvm] [LLVM][VecLib] Refactor LIBMVEC integration to be target neutral. (PR #138262)

[Benjamin Maxwell via llvm-commits]

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@@ -29,7 +29,7 @@ static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
                           "Accelerate framework"),
                clEnumValN(TargetLibraryInfoImpl::DarwinLibSystemM,
                           "Darwin_libsystem_m", "Darwin libsystem_m"),
-               clEnumValN(TargetLibraryInfoImpl::LIBMVEC_X86, "LIBMVEC-X86",
+               clEnumValN(TargetLibraryInfoImpl::LIBMVEC, "LIBMVEC",
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MacDue wrote:

Hmm. There actually seems to be a bug in clang's checks as it's checking for "LIBMVEC-X86" before this remapping, it should actually output `err_drv_unsupported_opt_for_target` for LIBMVEC on AArch64. I think once you rename  all uses of `LIBMVEC-X86` to `LIBMVEC` in clang that error will start working.

https://github.com/llvm/llvm-project/pull/138262